CN108269565A - With ribbed Bionic conflguration non-smooth surface polyurethane foam board and preparation method thereof - Google Patents
With ribbed Bionic conflguration non-smooth surface polyurethane foam board and preparation method thereof Download PDFInfo
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- CN108269565A CN108269565A CN201810203915.0A CN201810203915A CN108269565A CN 108269565 A CN108269565 A CN 108269565A CN 201810203915 A CN201810203915 A CN 201810203915A CN 108269565 A CN108269565 A CN 108269565A
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- smooth surface
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- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
- G10K11/00—Methods or devices for transmitting, conducting or directing sound in general; Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
- G10K11/16—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
- G10K11/162—Selection of materials
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
- C08G18/30—Low-molecular-weight compounds
- C08G18/32—Polyhydroxy compounds; Polyamines; Hydroxyamines
- C08G18/3271—Hydroxyamines
- C08G18/3278—Hydroxyamines containing at least three hydroxy groups
- C08G18/3281—Hydroxyamines containing at least three hydroxy groups containing three hydroxy groups
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
- C08G18/40—High-molecular-weight compounds
- C08G18/48—Polyethers
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
- C08G18/65—Low-molecular-weight compounds having active hydrogen with high-molecular-weight compounds having active hydrogen
- C08G18/66—Compounds of groups C08G18/42, C08G18/48, or C08G18/52
- C08G18/6666—Compounds of group C08G18/48 or C08G18/52
- C08G18/667—Compounds of group C08G18/48 or C08G18/52 with compounds of group C08G18/32 or polyamines of C08G18/38
- C08G18/6681—Compounds of group C08G18/48 or C08G18/52 with compounds of group C08G18/32 or polyamines of C08G18/38 with compounds of group C08G18/32 or C08G18/3271 and/or polyamines of C08G18/38
- C08G18/6688—Compounds of group C08G18/48 or C08G18/52 with compounds of group C08G18/32 or polyamines of C08G18/38 with compounds of group C08G18/32 or C08G18/3271 and/or polyamines of C08G18/38 with compounds of group C08G18/3271
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G2110/00—Foam properties
- C08G2110/0083—Foam properties prepared using water as the sole blowing agent
Landscapes
- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Acoustics & Sound (AREA)
- Multimedia (AREA)
- Soundproofing, Sound Blocking, And Sound Damping (AREA)
- Polyurethanes Or Polyureas (AREA)
Abstract
The invention discloses a kind of bionic non-smooth surface polyurethane foam board with ribbed form, including：Substrate, and the upper surface of base plate is provided with protrusion；The protrusion is structure as a whole, and material is polyurethane with the substrate；The protrusion is in the equally distributed triangle rib body of concentric ring-shaped or trapezoidal rib body；The present invention provides a kind of bionic non-smooth surface polyurethane foam boards with ribbed form and preparation method thereof, excellent sound absorbing performance can be shown in relatively thin thickness range, so as to achieve the purpose that sqouynd absorption lowering noise.
Description
Technical field
The present invention relates to acoustical material technical field, more particularly to a kind of bionical non-light with ribbed form
Sliding surface polyurethane foam board and preparation method thereof.
Background technology
Non-smooth surface bionic theory be biology by own existence to adapt to the organism surface Non-smooth surface that environment is shown
Characteristic.Organism surface status and appearance be non-smooth surface of organism, this characteristic that organism surface is shown, be nature visitor
It sees and exists.Non-smooth surface bionics techniques is using Biologic nonsmoothed morphosis in nature as prototype, solves one kind of engineering problem
Scientific application technology.
With the development of auto industry, automobile vendor is more and more stringenter to the NVH performance requirements of automobile.Acoustics is packed good
The bad size for directly influencing internal car noise, therefore excellent acoustics packaging has active influence for the noise reduction of automobile.Mesh
The preceding research for acoustics packaging only stops at the research of smooth surface, the research for non-smooth surface acoustics packaging character
There are blank, therefore combine bionics and non-smooth surface is applied in acoustics packaging and carry out novel high-performance sound-absorbing material not only
With important learning value, and with boundless application prospect.Currently about the special of bionic non-smooth surface noise reduction
Profit has, and patent announcement number discloses a kind of drop based on coupling bionic principle for the patent of invention of " CN103982705A " and overflows
Valve is flowed, when hydraulic oil flows through spool, valve body, non-smooth surface can reduce flow resistance for the invention, reduce frictional noise, fit
For the noise abatement of the hydraulic control component of various structure of relief valve forms, principle is novel, and simple in structure, noise reduction is shown
It writes；
But the research to non-smooth surface noise reduction is only resided in this field, for the research of sound absorption, there are vacancies；
Therefore, how non-smooth surface is applied in car acpistocs packaging with reference to bionics, provided a kind of with ribbed
The problem of bionic non-smooth surface polyurethane foam board of form and preparation method thereof is those skilled in the art's urgent need to resolve.
Invention content
In view of this, the present invention provides a kind of bionic non-smooth surface polyurethane foam board with ribbed form and its
Preparation method can show excellent sound absorbing performance, so as to achieve the purpose that sqouynd absorption lowering noise in relatively thin thickness range.
To achieve these goals, the present invention uses following technical scheme：
A kind of bionic non-smooth surface polyurethane foam board with ribbed form, including：Substrate, and the substrate upper table
Face is provided with protrusion；The protrusion is structure as a whole, and material is polyurethane with the substrate；The protrusion is in concentric circles
Cyclic annular equally distributed triangle rib body or trapezoidal rib body.
Through the above technical solutions, the technique effect of the present invention：Bionic non-smooth surface polyurethane with ribbed form
Cystosepiment is divided into substrate and protrusion, significantly improves intermediate frequency and high frequency sound absorbing performance, greatly improves acoustic absorptivity, while the material that absorbs sound
The thickness of flitch can be adjusted in relatively thin range according to actual conditions.
Preferably, a kind of in the bionic non-smooth surface polyurethane foam board of ribbed form, the triangle ribbed
The section of body is equilateral triangle, and the length of side of the equilateral triangle is 5mm, and the adjacent equilateral triangle distance is 7mm.
Preferably, a kind of in the bionic non-smooth surface polyurethane foam board of ribbed form, the trapezoidal ribbed
The section of body is isosceles trapezoid, and isosceles trapezoid bottom is 5mm, and upper bottom is 2mm, height 3mm, the adjacent isosceles trapezoid away from
From for 5mm.
Through the above technical solutions, the technique effect of the present invention：Pass through the triangle ribbed that section is equilateral triangle
The bionic, non-smooth table with ribbed form of different shape that body and section are formed for the trapezoidal rib body of isosceles trapezoid
The structure of face polyurethane foam board can increase the contact area of incidence wave and material, can make more sound wave incidents to sound
In wave material, and then increase the absorptivity of sound wave, improve sound absorbing performance.
Preferably, a kind of in the bionic non-smooth surface polyurethane foam board of ribbed form, the substrate and convex
It is 30mm to play overall thickness.
Preferably, a kind of in the bionic non-smooth surface polyurethane foam board of ribbed form, the substrate and institute
It states protrusion and is respectively provided with hole.
Through the above technical solutions, the technique effect of the present invention：When sound wave incident is to material surface, a part of acoustic energy hair
Raw reflection, another part enter material internal by hole, and air occurs relative motion with material internal hole and generates friction, sound
The raising of air vibration velocity can accelerate kinetic energy to be converted to frictional heat energy and then improve polyurethane when wave passes through non-smooth surface
The sound absorbing performance of cystosepiment.
Preferably, it is described that there is ribbed a kind of in the bionic non-smooth surface polyurethane foam board of ribbed form
The bionic non-smooth surface polyurethane foam board of form is packed by bonding method and object to be packaged.
Preferably, a kind of in the bionic non-smooth surface polyurethane foam board of ribbed form, the polyurethane by
Polyether polyol 330N, polyalcohol 3630, catalyst A33, triethanolamine, catalyst A1, silicone oil, deionized water and MDI compositions；
Its mass fraction compares 55-63：35-43：0.9-1.1：0.9-1.1：0.1-0.12：1.8-2.0：4.5-5.0：30-35.
A kind of preparation method of the bionic non-smooth surface polyurethane foam board with ribbed form：
Polyether polyol 330N, polyalcohol 3630, catalyst A33, triethanolamine, catalysis are weighed first, in accordance with material mixture ratio
Agent A1, silicone oil and deionized water, are inverted in dixie cup, and composite blender is carried out with the mixing speed of 2000r/min
Stir 90s；Next weighs corresponding MDI and is poured into dixie cup, is stirred using material mixers with 500r/min, treats paper
Cup adstante febre pours into it in mold, and mold is sealed rapidly；Mold is finally put into drying box, drying box temperature setting is
50 DEG C, after incubator is stored 2 hours, take out sample.
Preferably, it is described in a kind of bionic non-smooth surface polyurethane foam board preparation method with ribbed form
Mold is cylinder can, and the cylinder can box cover selects the mode of 3D printing to prepare, beat according to substrate surface ribbed shape
Material selection ABS resin is printed to prepare.
It can be seen via above technical scheme that compared with prior art, the present disclosure provides one kind to have ribbed shape
Bionic non-smooth surface polyurethane foam board of state and preparation method thereof has the bionic non-smooth surface polyurethane of ribbed form
Cystosepiment is divided into substrate and protrusion, significantly improves intermediate frequency and high frequency sound absorbing performance, greatly improves acoustic absorptivity, while the material that absorbs sound
The thickness of flitch can be adjusted in relatively thin range according to actual conditions；
Pass through the triangle rib body that section is equilateral triangle and the trapezoidal rib body that section is isosceles trapezoid
The structure of the bionic non-smooth surface polyurethane foam board with ribbed form of the different shape of composition, can increase incidence wave
It with the contact area of material, can make in more sound wave incidents to acoustic material, and then increase the absorptivity of sound wave, improve and inhale
Acoustic performance；When sound wave incident is to material surface, a part of acoustic energy reflects, and another part is entered by hole in material
Portion, air occur relative motion with material internal hole and generate friction, air vibration velocity when sound wave passes through non-smooth surface
Improve the sound absorbing performance that kinetic energy can be accelerated to be converted to frictional heat energy and then raising polyurethane foam board；
A kind of bionic non-smooth surface polyurethane foam board with ribbed form provided by the invention and preparation method thereof,
Polyurethane foam board is enable to show excellent sound absorbing performance in relatively thin thickness range, so as to reach sqouynd absorption lowering noise
Purpose.
Description of the drawings
In order to illustrate more clearly about the embodiment of the present invention or technical scheme of the prior art, to embodiment or will show below
There is attached drawing needed in technology description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
The embodiment of invention, for those of ordinary skill in the art, without creative efforts, can also basis
The attached drawing of offer obtains other attached drawings.
Axonometric drawing of Fig. 1 attached drawings for present invention setting triangle ribbed structure base board；
Full sectional view of Fig. 2 attached drawings for present invention setting triangle ribbed structure base board front view；
Fig. 3 attached drawings set the axonometric drawing of trapezoidal ribbed structure base board for the present invention；
Full sectional view of Fig. 4 attached drawings for present invention setting triangle ribbed structure base board front view；
Fig. 5 attached drawings are different bionic non-smooth surface polyurethane foam board sound absorbing performance correlation curves；
Fig. 6 attached drawings are the classification of bionic non-smooth surface polyurethane foam board.
Specific embodiment
Below in conjunction with the attached drawing in the embodiment of the present invention, the technical solution in the embodiment of the present invention is carried out clear, complete
Site preparation describes, it is clear that described embodiment is only part of the embodiment of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, those of ordinary skill in the art are obtained every other without making creative work
Embodiment shall fall within the protection scope of the present invention.
The embodiment of the invention discloses a kind of bionic non-smooth surface polyurethane foam boards and its system with ribbed form
Preparation Method can show excellent sound absorbing performance, so as to achieve the purpose that sqouynd absorption lowering noise in relatively thin thickness range.
With reference to attached drawing 1--4, the invention discloses a kind of bionic non-smooth surface polyurethane foams with ribbed form
Plate, including：Substrate 1, and 1 upper surface of the substrate is provided with protrusion 2；Described raised 2 are structure as a whole with the substrate 1, and
Material is polyurethane；Described raised 2 be in the equally distributed triangle rib body 11 of concentric ring-shaped or trapezoidal rib body 12.
In order to advanced optimize above-mentioned technical proposal, the section of triangle rib body 11 is equilateral triangle, equilateral triangle
The length of side for 5mm, adjacent equilateral triangle distance is 7mm.
In order to advanced optimize above-mentioned technical proposal, the section of trapezoidal rib body 12 is isosceles trapezoid, and isosceles trapezoid is gone to the bottom
For 5mm, upper bottom is 2mm, and height 3mm, adjacent isosceles trapezoid distance is 5mm.
In order to advanced optimize above-mentioned technical proposal, substrate 1 and raised 2 overall thickness are 30mm.
In order to advanced optimize above-mentioned technical proposal, substrate 1 and protrusion 2 are respectively provided with hole.
In order to advanced optimize above-mentioned technical proposal, the bionic non-smooth surface polyurethane foam board with ribbed form leads to
Bonding method is crossed to be packed with object to be packaged.
Polyurethane is by polyalcohol 330N, polyalcohol 3630, catalyst A33, triethanolamine, catalyst A1, silicone oil, deionization
Water and MDI compositions；Its mass fraction is than 60：40：1：1：0.12：1.8：4.8：30.
A kind of preparation method of the bionic non-smooth surface polyurethane foam board with ribbed form：
Polyether polyol 330N, polyalcohol 3630, catalyst A33, triethanolamine, catalysis are weighed first, in accordance with material mixture ratio
Agent A1, silicone oil and deionized water, are inverted in dixie cup, and composite blender is carried out with the mixing speed of 2000r/min
Stir 90s；
Next weighs corresponding MDI and is poured into dixie cup, is stirred using material mixers with 500r/min, treats paper
Cup adstante febre pours into it in mold, and mold is sealed rapidly；
Mold is finally put into drying box, drying box temperature setting is 50 DEG C, after incubator is stored 2 hours, takes out sample
Product.
In order to advanced optimize above-mentioned technical proposal, mold is cylinder can, and cylinder can box cover is according to substrate surface rib
Shape shape selects the mode of 3D printing to prepare, prepared by printed material selection ABS resin.
Embodiment 1
Manufacture and design the polyurethane foam board with triangle rib body bionic, non-smooth form.
Referring to Figures 1 and 2, the non-smooth surface form of polyurethane foam board is located on matrix surface in donut
What the equally distributed triangle ribbed body of shape was formed, triangle ribbed body section is equilateral triangle, triangle edges a length of 5mm, adjacent
Triangle rib body distance L is 7mm.Matrix 1 and protrusion 2 be urethane raw, material thickness 30mm, manufacture and design out three
For angle rib shape polyurethane foam compared with the smooth surface polyurethane foam of equal basis material, intermediate frequency and high frequency sound absorbing performance are apparent
It improves, and quality reduces by 5.5%.
Embodiment 2
Manufacture and design the polyurethane foam board of the bionic, non-smooth form with trapezoidal ribbed.
With reference to Fig. 3 and Fig. 4, the non-smooth surface form of polyurethane foam board is located on matrix surface in donut
The equally distributed trapezoidal rib body of shape is formed, and trapezoidal ribbed body section is isosceles trapezoid, a length of 2mm in isosceles trapezoid top, under
The length of side is 5mm, and adjacent trapezoidal rib body distance L is 5mm.Matrix 1 and protrusion 2 be urethane raw, material thickness 30mm, if
The trapezoidal ribbed polyurethane foam manufactured is counted compared with the smooth surface polyurethane foam of equal basis material, intermediate frequency and height
Frequency sound absorbing performance significantly improves, and quality reduces by 4.8%.
To sum up embodiment can be seen that the good effect of the invention obtained by following sound absorbing performance correlation curve.
With reference to Fig. 5, Fig. 5 is different bionic non-smooth surface polyurethane foam board sound absorbing performance correlation curves, in 20-
In 1500Hz frequency ranges, the acoustic absorptivity of various surface polyurethane foam boards increases, and not with the increase of frequency
With surface sound-absorbing material, acoustic absorptivity difference is little in this frequency range, wherein, smooth surface and triangle ribbed body surface face exist
Reach peak value during 1250Hz, the acoustic absorptivity of trapezoidal rib body surface acoustic packaging reaches maximum value in 1500Hz；In 1500-
In the range of 3000Hz, each surface acoustic absorptivity is reduced with the increase of frequency, wherein smooth surface and triangle ribbed body surface
The acoustic absorptivity in face is relatively low, and the sound absorbing performance on trapezoidal rib body surface is relatively preferable；In the range of 3000-6000Hz, sound absorption
Material acoustic absorptivity reduces afterwards as frequency increase first increases, wherein trapezoidal ribbed body Model sound absorbing performance is relatively best,
5000Hz reaches 0.945.
In conclusion compared with smooth flat, there is the bionic non-smooth surface polyurethane foam board of ribbed form low
It is influenced in frequency and middle low-frequency range (20-1500Hz) less, in medium-high frequency and high-frequency range (1500-6000Hz), sound absorption is inhaled
It can be enhanced.Sound absorbing performance from high to low be ranked sequentially for：Trapezoidal rib body surface, triangle ribbed body surface face.
Fig. 6 attached drawings are the classification of bionic non-smooth surface polyurethane foam board.
It is the number for reducing experiment as far as possible in view of actual conditions, the horizontal orthogonal arrage of four factor of this experimental selection three,
As shown in table 1.
Table 1
Level and average sound absorption coefficient of the numerical value corresponding to each factor in table 2.
Table 2
Table 3 is each factor signal-to-noise ratio data, and signal-to-noise ratio is bigger, and the influence for illustrating the factor to acoustic absorptivity is bigger, according to table
Lattice can learn that the sound absorbing performance of A2B1C2D2 combinations is best, deionized water, triethanolamine, silicone oil and catalyst A33 number
Respectively 4.8,1,1.8 and 1.
Table 3
| Symbol | Factor | Level 1 | Level 2 | Level 3 |
| A | Deionized water | -5.94 | -5.87 | -5.92 |
| B | Triethanolamine | -5.84 | -5.88 | -5.91 |
| C | Silicone oil | -5.90 | -5.86 | -5.88 |
| D | A33 | -5.95 | -5.92 | -5.94 |
Each embodiment is described by the way of progressive in this specification, the highlights of each of the examples are with other
The difference of embodiment, just to refer each other for identical similar portion between each embodiment.For device disclosed in embodiment
For, since it is corresponded to the methods disclosed in the examples, so description is fairly simple, related part is said referring to method part
It is bright.
The foregoing description of the disclosed embodiments enables professional and technical personnel in the field to realize or use the present invention.
A variety of modifications of these embodiments will be apparent for those skilled in the art, it is as defined herein
General Principle can be realized in other embodiments without departing from the spirit or scope of the present invention.Therefore, it is of the invention
The embodiments shown herein is not intended to be limited to, and is to fit to and the principles and novel features disclosed herein phase one
The most wide range caused.
Claims (9)
1. a kind of bionic non-smooth surface polyurethane foam board with ribbed form, which is characterized in that including：Substrate (1), and
Substrate (1) upper surface is provided with raised (2)；The protrusion (2) is structure as a whole, and material is with the substrate (1)
Polyurethane；The protrusion (2) is in the equally distributed triangle rib body (11) of concentric ring-shaped or trapezoidal rib body (12).
2. a kind of bionic non-smooth surface polyurethane foam board with ribbed form according to claim 1, feature
It is, the section of the triangle rib body (11) is equilateral triangle, and the length of side of the equilateral triangle is 5mm, adjacent described
Equilateral triangle distance is 7mm.
3. a kind of bionic non-smooth surface polyurethane foam board with ribbed form according to claim 2, feature
It is, the section of the trapezoidal rib body (12) is isosceles trapezoid, and the isosceles trapezoid bottom is 5mm, and upper bottom is 2mm, highly
3mm, the adjacent isosceles trapezoid distance is 5mm.
4. a kind of bionic non-smooth surface polyurethane foam board with ribbed form according to claim 3, feature
It is, the substrate (1) and raised (2) overall thickness are 30mm.
5. according to a kind of bionic non-smooth surface polyurethane foam with ribbed form of claim 1-4 any one of them
Plate, which is characterized in that the substrate (1) and raised (2) are respectively provided with hole.
6. according to a kind of bionic non-smooth surface polyurethane foam with ribbed form of claim 1-5 any one of them
Plate, which is characterized in that the bionic non-smooth surface polyurethane foam board with ribbed form is wrapped by bonding method with waiting
Dress object is packed.
7. according to a kind of bionic non-smooth surface polyurethane foam with ribbed form of claim 1-5 any one of them
Plate, which is characterized in that the polyurethane is by polyether polyol 330N, polyalcohol 3630, catalyst A33, triethanolamine, catalyst
A1, silicone oil, deionized water and MDI compositions；Its mass fraction compares 55-63：35-43：0.9-1.1：0.9-1.1：0.1-0.12：
1.8-2.0：4.5-5.0：30-35.
8. a kind of preparation method of the bionic non-smooth surface polyurethane foam board with ribbed form, which is characterized in that specific
Step includes：
Polyether polyol 330N, polyalcohol 3630, catalyst A33, triethanolamine, catalyst are weighed first, in accordance with material mixture ratio
A1, silicone oil and deionized water, are inverted in dixie cup, and composite blender is stirred with the mixing speed of 2000r/min
Mix 90s；
Next weighs corresponding MDI and is poured into dixie cup, is stirred using material mixers with 500r/min, treats that dixie cup is sent out
It is poured into mold, and mold is sealed rapidly when hot；
Mold is finally put into drying box, drying box temperature setting is 50 DEG C, after incubator is stored 2 hours, takes out sample.
9. a kind of preparation side of bionic non-smooth surface polyurethane foam board with ribbed form according to claim 8
Method, which is characterized in that the mold is cylinder can, and the cylinder can box cover is according to substrate surface ribbed shape, selection
Prepared by the mode of 3D printing, prepared by printed material selection ABS resin.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201810203915.0A CN108269565A (en) | 2018-03-13 | 2018-03-13 | With ribbed Bionic conflguration non-smooth surface polyurethane foam board and preparation method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810203915.0A CN108269565A (en) | 2018-03-13 | 2018-03-13 | With ribbed Bionic conflguration non-smooth surface polyurethane foam board and preparation method thereof |
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